Carryall 6 no function - good solenoid new batts

[bosuck]

Hi I am new to this forum and carts as well. I just got an electric carryall 6 - year 2000. It does not work .
I bought new batts and have a voltage of 48.8. After reading the forum, charged up the batts more - now the are at 51v. I have jacked up the cart and jumped the solenoid. Still no function. The key switch functions, the revers alarm works and on board charger works. I also reset the obc - as per forum. There is voltage to the motor on all wires.

I need help figuring out the next trouble shooting step.

Is there some way to test the motor? Jump it?
Test the controller? How do you test the obc? What is an indication its broken?
Is there trouble shooting for the gas peddle black box?

Thanks for any help and direction.